uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/libraries/ocl-icd/default.nix

@@ -0,0 +1,39 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, ruby
+, opencl-headers
+, addOpenGLRunpath
+, autoreconfHook
+}:
+
+stdenv.mkDerivation rec {
+  pname = "ocl-icd";
+  version = "2.3.1";
+
+  src = fetchFromGitHub {
+    owner = "OCL-dev";
+    repo = "ocl-icd";
+    rev = "v${version}";
+    sha256 = "1km2rqc9pw6xxkqp77a22pxfsb5kgw95w9zd15l5jgvyjb6rqqad";
+  };
+
+  nativeBuildInputs = [
+    autoreconfHook
+    ruby
+  ];
+
+  buildInputs = [ opencl-headers ];
+
+  configureFlags = [
+    "--enable-custom-vendordir=/run/opengl-driver/etc/OpenCL/vendors"
+  ];
+
+  meta = with lib; {
+    description = "OpenCL ICD Loader for ${opencl-headers.name}";
+    homepage    = "https://github.com/OCL-dev/ocl-icd";
+    license     = licenses.bsd2;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ r-burns ];
+  };
+}